A6-3650 vs Core 2 Duo T6400

CPU

GPU

A6-3650

4 Cores4 Thrd100 WWMax: 2.6 GHz2011

Similar parts

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Core 2 Duo T6400

2 Cores2 Thrd2 WWMax: 2 GHz2009

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A6-3650 vs Core 2 Duo T6400 Performance Spectrum

A6-3650

4 / 4

2,098

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core 2 Duo T6400

2 / 2

2,115

+0.8%

About PassMark

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

A6-3650 vs Core 2 Duo T6400 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

A6-3650 vs Core 2 Duo T6400: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

A6-3650

2011

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon HD 6530D, while Core 2 Duo T6400 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Core 2 Duo T6400.

Trade-offs

❌Lower Geekbench single-core performance for gaming (311 vs 650).
❌Lower PassMark (2,098 vs 2,115).
❌Launch MSRP is still $115 MSRP, while Core 2 Duo T6400 mostly shows up through inconsistent older-market listings.
❌4900% higher power demand at 100W vs 2W.

Core 2 Duo T6400

2009

Why buy it

✅+109% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 2W instead of 100W, a 98W reduction.

Trade-offs

❌No integrated graphics, while A6-3650 can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike A6-3650.

Quick Answers

So, is Core 2 Duo T6400 better than A6-3650?

Yes. Core 2 Duo T6400 is the better all-around CPU here. It gives you a 1.1% average FPS lead across 50 shared CPU game tests in our data and 0.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core 2 Duo T6400 is the better pick. According to our tests, it delivers 1.1% more average FPS across 50 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core 2 Duo T6400 is the stronger fit. You are getting 0.8% better PassMark, backed by 2 cores and 2 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core 2 Duo T6400 is still the much better call for a fresh build. Core 2 Duo T6400 comes in at an unclear MSRP at unclear MSRP versus $115 MSRP, and it still gives you a 1.1% average FPS lead across 50 shared CPU game tests in our data. A6-3650 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2011 platform. Even with 100.0% better value on paper (18.2 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on FM1.

Which one is more future-proof for 2026 and beyond?

A6-3650 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2009). That makes it the safer long-term bet.

A6-3650 vs Core 2 Duo T6400 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

A6-3650

The A6-3650 is manufactured by AMD. It was released in 2014-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 100 Watt. Memory support: DDR3. Passmark benchmark score: 2,098 points. Launch price was $70.

Core 2 Duo T6400

The Core 2 Duo T6400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,115 points. Launch price was $249.

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Processing Power

The A6-3650 packs 4 cores / 4 threads, while the Core 2 Duo T6400 offers 2 cores / 2 threads — the A6-3650 has 2 more cores. Boost clocks reach 2.6 GHz on the A6-3650 versus 2 GHz on the Core 2 Duo T6400 — a 26.1% clock advantage for the A6-3650 (base: 2.6 GHz vs 2 GHz). The A6-3650 uses the Llano (2011−2012) architecture (32 nm), while the Core 2 Duo T6400 uses Penryn (2008−2011) (45 nm). In PassMark, the A6-3650 scores 2,098 against the Core 2 Duo T6400's 2,115 — a 0.8% lead for the Core 2 Duo T6400. Geekbench 6 single-core — the metric most relevant to gaming — records 311 vs 650, a 70.6% lead for the Core 2 Duo T6400 that directly translates to higher frame rates. L3 cache: 0 kB on the A6-3650 vs 2 MB L2 Cache on the Core 2 Duo T6400.

Feature	A6-3650	Core 2 Duo T6400
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	2.6 GHz+30%	2 GHz
Base Clock	2.6 GHz+30%	2 GHz
L3 Cache	0 kB	2 MB L2 Cache
L2 Cache	1 MB (per core)	2 MB+100%
Process	32 nm-29%	45 nm
Architecture	Llano (2011−2012)	Penryn (2008−2011)
PassMark	2,098	2,115
Geekbench 6 Single	311	650+109%
Geekbench 6 Multi	—	1,300

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Memory & Platform

The A6-3650 uses the FM1 socket (PCIe 2.0), while the Core 2 Duo T6400 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1866 on the A6-3650 versus DDR2-800 on the Core 2 Duo T6400 — the A6-3650 supports 133.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The A6-3650 supports up to 16 GB of RAM compared to 8 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (A6-3650) vs 0 (Core 2 Duo T6400) — the A6-3650 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A55,A75 (A6-3650) and Intel GM45,Intel PM45 (Core 2 Duo T6400).

Feature	A6-3650	Core 2 Duo T6400
Socket	FM1	PGA478
PCIe Generation	PCIe 2.0+82%	PCIe 1.1
Max RAM Speed	DDR3-1866+133%	DDR2-800
Max RAM Capacity	16 GB+100%	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (A6-3650) vs No (Core 2 Duo T6400). The A6-3650 includes integrated graphics (Radeon HD 6530D), while the Core 2 Duo T6400 requires a dedicated GPU. Primary use case: A6-3650 targets Budget Desktop, Core 2 Duo T6400 targets Mobile. Direct competitor: A6-3650 rivals Pentium G850.